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Balakirouchenane D, Vasseur A, Bonnet-Serrano F, Choi M, Khoudour N, Puszkiel A, Groussin L, Vidal M, Declèves X, Bertherat J, Blanchet B. LC-MS/MS method for simultaneous quantification of osilodrostat and metyrapone in human plasma from patients treated for Cushing's Syndrome. J Pharm Biomed Anal 2023; 228:115316. [PMID: 36868030 DOI: 10.1016/j.jpba.2023.115316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/13/2023] [Accepted: 02/23/2023] [Indexed: 03/05/2023]
Abstract
Steroidogenesis inhibitors such as metyrapone (MTP) and osilodrostat (ODT) have a key role in the medical treatment of endogenous Cushing's Syndrome (ECS). Both drugs are characterized by a high inter-individual variability of response and require a dose-titration period to achieve optimal control of cortisol excess. However, PK/PD data remain scarce for both molecules and a pharmacokinetically guided approach could help reaching eucortisolism more rapidly. We aimed to develop and validate a liquid chromatography tandem mass spectrometry (LC-MS/MS) method for the simultaneous quantification of ODT and MTP in human plasma. After addition of isotopically labeled internal standard (IS), plasma pretreatment consisted in protein precipitation with acetonitrile including 1% formic acid (v/v). Chromatographic separation was performed on Kinetex® HILIC (4.6 × 50 mm; 2.6 µm) analytical column with an isocratic elution during the 2.0-min run time. The method was linear from 0.5 to 250 ng/mL for ODT and from 2.5 to 1250 ng/mL for MTP. Intra- and inter-assay precisions were < 7.2%, with an accuracy ranging from 95.9% to 114.9%. The IS-normalized matrix effect ranged from 106.0% to 123.0% (ODT) and from 107.0% to 123.0% (MTP) and the range of the IS-normalized extraction recovery was 84.0-101.0% for ODT and 87.0-101.0% for MTP. The LC-MS/MS method was successfully applied in patients' plasma samples (n = 36), trough concentration of ODT and MTP ranged from 2.7 ng/mL to 8.2 ng/mL and from 10.8 ng/mL to 27.8 ng/mL, respectively. Incurred sample reanalysis exhibits less than 14% difference between the first and the second analysis for both drugs. This accurate and precise method, meeting all validation criteria, can therefore be used for plasma drug monitoring of ODT and MTP within the dose-titration period.
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Affiliation(s)
- David Balakirouchenane
- Department of Pharmacokinetics and Pharmacochemistry, Cochin Hospital, AP-HP, CARPEM, 75014 Paris, France; Université Paris Cité, UMR8038 CNRS, U1268 INSERM, Faculty of Pharmacy, CARPEM, 75006 Paris, France.
| | - Axelle Vasseur
- Department of Pharmacokinetics and Pharmacochemistry, Cochin Hospital, AP-HP, CARPEM, 75014 Paris, France
| | - Fidéline Bonnet-Serrano
- Hormonal Biology Laboratory, Cochin Hospital, AP-HP, 75014 Paris, France; Université Paris Cité, Institut Cochin, INSERM U1016, CNRS UMR8104, 75006 Paris, France
| | - Minna Choi
- Department of Pharmacokinetics and Pharmacochemistry, Cochin Hospital, AP-HP, CARPEM, 75014 Paris, France
| | - Nihel Khoudour
- Department of Pharmacokinetics and Pharmacochemistry, Cochin Hospital, AP-HP, CARPEM, 75014 Paris, France
| | - Alicja Puszkiel
- Department of Pharmacokinetics and Pharmacochemistry, Cochin Hospital, AP-HP, CARPEM, 75014 Paris, France; Université Paris Cité, INSERM UMR-S1144, Faculty of Pharmacy, 75006 Paris, France
| | - Lionel Groussin
- Université Paris Cité, Institut Cochin, INSERM U1016, CNRS UMR8104, 75006 Paris, France; Department of Endocrinology, Cochin Hospital, AP-HP, 75014 Paris, France
| | - Michel Vidal
- Department of Pharmacokinetics and Pharmacochemistry, Cochin Hospital, AP-HP, CARPEM, 75014 Paris, France; Université Paris Cité, UMR8038 CNRS, U1268 INSERM, Faculty of Pharmacy, CARPEM, 75006 Paris, France
| | - Xavier Declèves
- Department of Pharmacokinetics and Pharmacochemistry, Cochin Hospital, AP-HP, CARPEM, 75014 Paris, France; Université Paris Cité, INSERM UMR-S1144, Faculty of Pharmacy, 75006 Paris, France
| | - Jérôme Bertherat
- Université Paris Cité, Institut Cochin, INSERM U1016, CNRS UMR8104, 75006 Paris, France; Department of Endocrinology, Cochin Hospital, AP-HP, 75014 Paris, France
| | - Benoit Blanchet
- Department of Pharmacokinetics and Pharmacochemistry, Cochin Hospital, AP-HP, CARPEM, 75014 Paris, France; Université Paris Cité, UMR8038 CNRS, U1268 INSERM, Faculty of Pharmacy, CARPEM, 75006 Paris, France
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Murata H, Higuchi T, Otagiri M. Oral pharmacokinetics and in-vitro metabolism of metyrapone in male rats. ACTA ACUST UNITED AC 2016; 68:970-9. [PMID: 27265478 DOI: 10.1111/jphp.12560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 03/29/2016] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The purpose of this study was to investigate the pharmacokinetics of a single oral administration of metyrapone (MP) and metabolites produced from it in male Wistar rats, and the major tissues and enzymes involved in the production of the MP metabolites. Furthermore, the MP metabolism in human liver subcellular fractions was compared with that in rats. METHODS High-performance liquid chromatography with ultraviolet detection (HPLC-UV) was used to determine the concentrations of MP and its metabolites in plasma and urine after administration, and the production activity of MP metabolites in subcellular fractions of various tissues. KEY FINDINGS Plasma concentration of MP was rapidly increased and decreased, and the primary metabolite, metyrapol (MPOL), was immediately produced. The production activity of MPOL was substantially inhibited by an 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) inhibitor in the rat and human liver microsomal and mitochondrial fractions. In the liver cytosolic fraction, the activity was inhibited by a carbonyl reductase inhibitor in the humans but not rats. CONCLUSIONS In this study, we elucidated the plasma pharmacokinetics of MP and its metabolites in male rats after an oral administration. MPOL is most likely to be produced by 11β-HSD1 in the male rats and humans.
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Affiliation(s)
- Hideyuki Murata
- Pre-clinical department, Janssen Pharmaceutical K.K., Chiyoda-ku, Tokyo, Japan.,Nihon Pharmaceutical University, Saitama, Japan
| | | | - Masaki Otagiri
- Faculty of Pharmaceutical Sciences, Sojo University, Nishi-ku, Kumamoto, Japan
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Enantioseparation of chiral pharmaceuticals in biomedical and environmental analyses by liquid chromatography: An overview. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 968:8-21. [DOI: 10.1016/j.jchromb.2014.02.049] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2013] [Revised: 02/23/2014] [Accepted: 02/28/2014] [Indexed: 11/23/2022]
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Kuypers KPC, de la Torre R, Farre M, Pujadas M, Ramaekers JG. Inhibition of MDMA-induced increase in cortisol does not prevent acute impairment of verbal memory. Br J Pharmacol 2013; 168:607-17. [PMID: 22946487 PMCID: PMC3579237 DOI: 10.1111/j.1476-5381.2012.02196.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 07/31/2012] [Accepted: 08/08/2012] [Indexed: 01/20/2023] Open
Abstract
Background Ecstasy use is commonly linked with memory deficits in abstinent ecstasy users. Similar impairments are being found during ecstasy intoxication after single doses of ± 3,4 metylenedioxymethamphetamine (MDMA). The concordance of memory impairments during intoxication and abstinence suggests a similar neuropharmacological mechanism underlying acute and chronic memory impairments. The mechanism underlying this impairment is to date not known. We hypothesized that cortisol might play an important role in this mechanism as cortisol, implicated in the regulation of memory performance, can be brought out of balance by stressors like MDMA. Methods In the present study, we aimed to block the MDMA-induced acute memory defect by giving participants a cortisol synthesis inhibitor (metyrapone) together with a single dose of MDMA. Seventeen polydrug MDMA users entered this placebo-controlled within subject study with four treatment conditions. The treatments consisted of MDMA (75 mg) and metyrapone (750 mg), alone and in combination, and double placebo. Pre-treatment with metyrapone or Placebo occurred 1 h prior to MDMA or Placebo administration. Memory performance was tested at peak drug concentrations by means of several memory tests. Cortisol levels were determined in blood and oral fluid; this served as a control measure to see whether manipulations were effective. Results Main findings indicated that whereas treatment with metyrapone blocked the expected MDMA-induced increase in cortisol levels in blood, it did not prevent the MDMA-induced memory deficit from happening. Conclusion We therefore conclude that MDMA-induced increments in cortisol concentrations are not related to MDMA-induced memory impairments.
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Affiliation(s)
- K P C Kuypers
- Department of Neuropsychology & Psychopharmacology, Faculty of Psychology & Neuroscience, Maastricht University, Maastricht, The Netherlands.
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Thermodynamic and Extrathermodynamic Studies of Enantioseparation of Imidazolinone Herbicides on Chiralcel OJ Column. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/460787] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A homologous series of chiral imidazolinone herbicide was previously resolved on Chiralcel OJ column in high performance liquid chromatography. However, the mechanism of the chiral separation remains unclear. In this study, chromatographic behaviors of five chiral imidazolinone herbicides were characterized by thermodynamic and extrathermodynamic methods in order to enhance the understanding of the chiral separation. Thermodynamic parameters of this study were derived from equilibrium constant () that was estimated from the moment analysis of the chromatographic peak. Van't Hoff plots of ( versus ) were linear at a range of 15–50°C, only nonlinear at a range of 5–15 °C with n-hexane (0.1%, trifluoroacetic acid)-2-propanol 60/40 (v/v) mobile phase. The enantiomer retention on the chiral column was entropy-driven at a lower temperature (5°C) and enthalpy-driven at a higher temperature (10 to 50°C). Enantioseparations of four of the five imidazolinone herbicides were enthalpy-driven, only entropy-driven for imazaquin. Enantioseparation mechanisms were different in between 5–10°C and 15–50°C probably due to the conformational change of the OJ phase. Enthalpy-entropy compensation showed similar mechanisms in retention and chiral separation for the five or enantiomers. Several extrathermodynamic relationships were able to be extracted to address additivity of group contribution.
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Akabane T, Gerst N, Naritomi Y, Masters JN, Tamura K. A Practical and Direct Comparison of Intrinsic Metabolic Clearance of Several Non-CYP Enzyme Substrates in Freshly Isolated and Cryopreserved Hepatocytes. Drug Metab Pharmacokinet 2012; 27:181-91. [DOI: 10.2133/dmpk.dmpk-11-rg-097] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hotham NJ, Ilett KF, Hackett LP, Morton MR, Muller P, Hague WM. Transfer of metyrapone and its metabolite, rac-metyrapol, into breast milk. J Hum Lact 2009; 25:451-4. [PMID: 19759353 DOI: 10.1177/0890334409345496] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Metyrapone, an inhibitor of corticosteroid biosynthesis, is used in the diagnosis and treatment of adrenocortical hyperfunction. The authors describe the excretion of metyrapone and its metabolite, rac-metyrapol, in milk from a lactating woman requiring metyrapone treatment (250 mg 4 times daily). At steady state, the average concentrations in milk and absolute and relative infant doses were 11 microg/L, 1.7 microg/kg/d, and 0.02%, respectively, for metyrapone, and 48.5 microg/L, 7.3 microg/kg/d, and 0.08%, respectively, for rac-metyrapol. The findings suggest that maternal metyrapone use during breastfeeding is extremely unlikely to be a significant risk for the breastfed infant.
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Affiliation(s)
- Neil J Hotham
- Department of Pharmacy, Women's and Children's Hospital, North Adelaide, South Australia
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Lao W, Gan J. Hold-up volume and its application in estimating effective phase ratio and thermodynamic parameters on a polysaccharide-coated chiral stationary phase. J Sep Sci 2007; 30:2590-7. [PMID: 17874415 DOI: 10.1002/jssc.200700213] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
As an "unretained" marker, 1,3,5-tri-tert-butylbenzene (TTBB) has been commonly used to measure the hold-up volume. Despite many racemates have been resolved on Chiralcel OJ column, the hold-up volume of the column is still not well characterized. The aim of this work was to evaluate the chromatographic behavior of TTBB on the OJ column, and its application in estimating the effective phase ratio and thermodynamic parameters. The hold-up volume was affected not only by the mobile phase composition but also the solvents used for dissolving TTBB. A higher concentration of TTBB (0.500 mg/mL) showed a better reproducibility than when used at a lower concentration. After correction for thermal expansion of the mobile phase, TTBB was found to have slight retention on the OJ phase. The effective phase ratio increased with an increase in the temperature and decrease in the strength of the mobile phase. The enthalpy and entropy of enantiomers of imidazolinone herbicides were independent of the temperature in a linear van't Hoff plot when the effective phase ratio was changed. This study shows that, based on the hold-up volume from TTBB, thermodynamic evaluation with parameters derived from the distribution constant is valuable for understanding chromatographic retention and enantioseparation mechanisms of chiral analytes.
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Affiliation(s)
- Wenjian Lao
- Department of Environmental Sciences, University of California, Riverside, CA, USA.
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Cass QB, Degani ALG, Cassiano N. THE USE OF A POLYSACCHARIDE-BASED COLUMN ON MULTIMODAL ELUTION. J LIQ CHROMATOGR R T 2007. [DOI: 10.1081/jlc-100101505] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Quezia B. Cass
- a Departamento de Química , Universidade Federal de S. Carlos , Cx. Postal 676, S. Carlos, SP, 13565-905, Brazil
| | - Ana Luiza G. Degani
- a Departamento de Química , Universidade Federal de S. Carlos , Cx. Postal 676, S. Carlos, SP, 13565-905, Brazil
| | - Neila Cassiano
- a Departamento de Química , Universidade Federal de S. Carlos , Cx. Postal 676, S. Carlos, SP, 13565-905, Brazil
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Breyer-Pfaff U, Nill K. Carbonyl reduction of naltrexone and dolasetron by oxidoreductases isolated from human liver cytosol. J Pharm Pharmacol 2005; 56:1601-6. [PMID: 15563768 DOI: 10.1211/0022357045020] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The opioid receptor antagonist naltrexone and the antiemetic 5-HT(3) receptor antagonist dolasetron are ketonic drugs that are efficiently reduced to their corresponding alcohols in-vivo. These experiments aimed at characterizing the role in these reactions of individual oxidoreductases present in human liver cytosol. Aldo-keto reductases (AKRs) and carbonyl reductase (CR, EC 1.1.1.184) purified from human liver cytosol were incubated with varying substrate concentrations and 6beta-naltrexol or reduced dolasetron were analysed by HPLC. AKR1C1, AKR1C2, and AKR1C4 were able to reduce both substrates. On the basis of k(cat)/K(m) values, AKR1C4 was nearly 1000-fold more efficient in reducing naltrexone than was AKR1C1, while AKR1C2 was of intermediate efficiency. Substrate inhibition was observed on incubating AKR1C2 or AKR1C4 with naltrexone. In contrast, dolasetron was also a substrate of CR. AKR1C1 and AKR1C4 were the most efficient enzymes in producing reduced dolasetron. We concluded that the efficient reduction of naltrexone by AKR1C4 probably causes the high 6beta-naltrexol/naltrexone ratio in man. The rapid disappearance from human plasma of dolasetron given intravenously and its virtual absence after oral dosage are explained by its liability to reduction by several enzymes, including CR which shows widespread expression in human tissues.
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Affiliation(s)
- U Breyer-Pfaff
- Institut für Pharmakologie und Toxikologie, Abteilung Toxikologie, Eberhard-Karls-Universität Tübingen, Wilhelmstrasse 56, 72074 Tübingen, Germany.
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Cassiano NM, Cass QB, Degani ALG, Wainer IW. Determination of the plasma levels of metyrapone and its enantiomeric metyrapol metabolites by direct plasma injection and multidimensional achiral-chiral chromatography. Chirality 2002; 14:731-5. [PMID: 12237834 DOI: 10.1002/chir.10133] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The development and validation of a direct injection high-performance liquid chromatographic (HPLC) method, with column switching, for the determination of metyrapol enantiomers and metyrapone in human plasma is described. The system used in this work was composed of a restricted access media (RAM) bovine serum albumin (BSA) octyl column coupled to an amylose tris(3,5-dimethoxyphenylcarbamate) chiral column. Water was used as eluent for the first 5 min at a flow rate of 1.0 ml/min for the elution of the plasma proteins and then acetonitrile-water (30:70 v/v) for the transfer and analysis of metyrapol enantiomers and metyrapone, which were detected by UV at lambda = 260 nm. The total analysis time was about 32 min. The calibration curves for each enantiomer and for the metyrapone were linear in the ranges 0.075-0.75 microg/ml and 0.150-1.50 microg/ml, respectively. Recoveries, intra- and interday precision and accuracy were determined using three quality controls, one low (0.18 microg/ml), one medium (0.75 microg/ml), and one high (1.35 microg/ml) plasma concentration. Quantitative recoveries and good precision and accuracy were obtained. The limit of quantitation were 0.045 microg/ml for both enantiomers and for the metyrapone.
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Affiliation(s)
- Neila M Cassiano
- Departamento de Química, Universidade Federal de São Carlos, SP, Brazil
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Abstract
AbstractAffinity chromatography is a type of liquid chromatography that makes use of biological-like interactions for the separation and specific analysis of sample components. This review describes the basic principles of affinity chromatography and examines its use in the testing of clinical samples, with an emphasis on HPLC-based methods. Some traditional applications of this approach include the use of boronate, lectin, protein A or protein G, and immunoaffinity supports for the direct quantification of solutes. Newer techniques that use antibody-based columns for on- or off-line sample extraction are examined in detail, as are methods that use affinity chromatography in combination with other analytical methods, such as reversed-phase liquid chromatography, gas chromatography, and capillary electrophoresis. Indirect analyte detection methods are also described in which immunoaffinity chromatography is used to perform flow-based immunoassays. Other applications that are reviewed include affinity-based chiral separations and the use of affinity chromatography for the study of drug or hormone interactions with binding proteins. Some areas of possible future developments are then considered, such as tandem affinity methods and the use of synthetic dyes, immobilized metal ions, molecular imprints, or aptamers as affinity ligands for clinical analytes.
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Affiliation(s)
- David S Hage
- Department of Chemistry, 738 Hamilton Hall, University of Nebraska, Lincoln, NE 68588-0304. Fax 402-472-9402; e-mail
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Phinney KW, Sander LC, Wise SA. Coupled achiral/chiral column techniques in subcritical fluid chromatography for the separation of chiral and nonchiral compounds. Anal Chem 1998; 70:2331-5. [PMID: 9624904 DOI: 10.1021/ac971060z] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A multicolumn approach was developed to address the limited achiral selectivity of chiral stationary phases. Groups of structurally related compounds, including beta-blockers and 1,4-benzodiazepines, were separated using coupled achiral/chiral stationary phases under subcritical fluid conditions. The achiral selectivity of amino and cyano stationary phases was used to modify the resolution of compounds on a Chiralcel OD chiral stationary phase by combining the achiral and chiral columns in series. In the case of the benzodiazepines, separation of achiral compounds was performed concurrently with the enantioseparation of chiral molecules. The separation of components of a multidrug cough and cold medication was also demonstrated on a cyano column coupled with a Chiralpak AD chiral stationary phase. The use of modified carbon dioxide eluents eliminated the mobile phase incompatibility problems associated with column coupling in liquid chromatography and incorporated the high efficiency of sub- and supercritical fluid chromatography.
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Affiliation(s)
- K W Phinney
- Chemical Science and Technology Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-0001, USA.
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Fried K, Wainer IW. Column-switching techniques in the biomedical analysis of stereoisomeric drugs: why, how and when. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 1997; 689:91-104. [PMID: 9061485 DOI: 10.1016/s0378-4347(96)00400-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The application of stereoselective chromatographic techniques to bioanalytical problems has become a routine procedure. However, this approach is not always straightforward; particularly when the separation involves chromatographic chiral stationary phases. Matrix interferences and more importantly, overlapping metabolite peaks often make direct analysis impractical. One strategy to overcome these problems is to combine two or more columns with different selectivities to produce a multi-dimensional chromatographic system. This review addresses the use of coupled column chromatography in HPLC systems including different coupling methods and the application of the resulting arrangements to bioanalytical analyses.
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Affiliation(s)
- K Fried
- Department of Oncology, McGill University, Montreal General Hospital, Que, Canada
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